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47 Maui Ocean Adventures & Whale Watch Magazine HUMPBACK ECHOLOCATION Alison Stimpert of the Hawaii Institute of Marine Biology says that 'megapclicks', aside from being attempts to capture prey, may also be used to detect the sea floor. Humpbacks travel at a speed of 3-6 mph, but can cruise at up to 20 mph for short distances. But they don't all migrate at one time. In fact, some don't migrate at all - a phenomenon that still has researchers baffled. Imagine swimming non-stop for 3,500 miles or more! Every year, in early fall, humpback whales begin an incredible journey from the Gulf of Alaska to Hawaii. These gentle giants travel about 3,500 miles from their feeding grounds in polar waters to the warm waters of the Hawaiian Islands over a period of four to eight weeks. Humpbacks travel at a speed of 3-6 mph, but can cruise at up to 20 mph for short distances. But they don't all migrate at one time. In fact, some don't migrate at all - a phenomenon that still has researchers baffled. Imagine swimming non-stop for 3,500 miles or more! Every year, in early fall, humpback whales begin an incredible journey from the Gulf of Alaska to Hawaii. These gentle giants travel about 3,500 miles from their feeding grounds in polar waters to the warm waters of the Hawaiian Islands over a period of four to eight weeks. But they don't all migrate at one time. In fact, some don't migrate at all - a phenomenon that still has researchers baffled. Imagine swimming non-stop for 3,500 miles or more! Every year, in early fall, humpback whales begin an incredible journey from the Gulf of Alaska to Hawaii. These gentle giants travel about 3,500 miles from their feeding grounds in polar waters to the warm waters of the Hawaiian Islands over a period of four to eight weeks.